Overseaming machine



June 4, 1929. M, KQH LER 1315.372

OVERSEAMING MACHHIE Filed May 11, 1927 3 Sheets-Sheet 1 W :INVENTOR A5 ATTORNEY June 4; 1929.

M. KOHLER OVERSEAMING MACHINE Filed May 11, 1927 Sheets-Sheet 2 INVENTOR /Z:6 z

W ATTORNEY June 4, 1929. M. KGHLER 1,715,372

I OVERSEAMING MACHINE Filed May 11, 1927 3 Sheets-Sheet 5 m. I INVENTOR Patented June 4, 1929.

UNITED STATES MAZ K O HLER, OF LINIBAOH, GERMANY.

ovnnsnamme macnmn.

Application filed Kay 11,

The present invention relates to an 'im proveiuent in overseaming machines. In well known forms of sewing machines of this type, it has been common to provide work holding and feeding cylinders driven intermittently to advance the work step by step between each two successive stitch forming operations, said cylinders or cups being arranged in different ways, some supported from above and some from below. In my improved machine hereinafter to be described, one object has been to suspend the cups in such a way that the space beneath them will be clear for the passage .of articles of different and unusual shapes and sizes. It will be apparent that in some forms of machines where bothcups are supported underneath, the range of variety wit respect to the kind and size of articles to which the ove'rseaming operation is applied will be considerably restricted. A further object of my invention has been to provide a machine of the overhead suspended cu type which ma be operated advantageous y at relatively igh speed and which will present features of arrangement and inter-relation of parts calculated to facilitate use of the machine and increase its rate of production.

One embodiment of my invention is illustrated in the drawings accompanying the present specification and in which Figure l is a side elevation;

Figure 2, a front elevation;

Figure 3, a top plan view; and

Figure 4, a horizontal section on the line 4--4 Figure 1.

Referring to the drawings, a main driving shaft 1 is mounted in a housing 2 and actuates stitch .forming mechanism of any suitable kind, various types of which are well known in the art. Cooperating feed on s 3 and 4 are also actuated by said main siiaft through suitable intermediate connections which include a cam 5 mounted on said shaft and cooperating with a strap 6 at one end of a link 7 which is pivotally secured at the inner end of a lever 8 secured to and actuating a shaft 9 journaled in bearings 10 and 11. An arm 12, Figure 3, secured to the upper end of shaft 9 is provided with a slot 13 engaging a bolt 14 ad'ustable along said slot to vary the len h o thrust of a rod .15 pivotally connecte to a lever 16 by a ball and socket joint, as 17. An intermittent or step by step movement, not-shown in detail but 1927. Serial No. 190,478.

which m ay be of any suitable well known construction such as that illustrated and described in my co-pending application, Serial No. 190,477, filed May '11, 1927, is enclosed in a housing 19 and actuated by the lever 16, transmitting intermittent motion to a vertical shaft 18. The housing 19 is su ported on a bracket 20,secured at one si e of the main housing 2 by means of any suitable fastening devices such as screws or bolts 21. A gear 22 is mounted at the lower end of shaft 18 and engages a pinion 23 attached to a stud shaft 24, Figure 4. The cup 3 is mounted on shaft 24and rotates therewith when shaft 18 is rotated b theinstrumentalities hereinabove describe i A tiltable head 25 is pivotally mounted on an extension of the bracket 20 by means of bolts 26 and 27 passing through. end portions of arms 28 and 29 respectively. An 11 )right shaft 30 is journaled in that portion 0 head 25 forming a hearing at the junction of the lower ends of arms 28 and 29. .At the u per simultaneously and by equal amounts upon each increment of advance movement of the intermittent movement device actuating shaft '18.

As indicated more clearlyv in Figure 1, a lever 35 is secured to a rearwardly extending portion of the head 25 by any suitablenneans such as screws or bolts 36, 37 Q The free or rear end of said lever 35 is adapted for attachment to suitable means by which it may bedeflected downwardly, such as a treadle, not shown, and against resistance of a torsion spring 38 having one end secured to said lever at 39 and the other end adjustably-s'ecured to a fixed bracket 40. By means of. said lever together with the connections just described, cup 4 is' readily moved away from its position in yielding engagement, with cup. 3 to permitthe insertion or removal of articles to be worked on. I have also provided means for limitin the extent of this movement including a Tug 41 projecting laterally from the housing 19 and extending between end of said shaft is located a gear 31 mes ling v provided with an adjustable set screw or olt 44 and 45 respectively arranged with their inner ends adjace'nt to said lug. 41. As indicated more clearly in I igures 1 and 4, the gear 22 and pinion 23 and gear 33 and pinion 53 are enclosed in suitable guards such as casings 46 and 47 respectively.

In operation, the main shaft 1 is driven from any suitable source of power such as a motor, not shown, connected by a belt or other suitable means with the pulley 48 mounted on shaft 1. The forward and back movement of link 7 actuated by cam 5 on shaft 1 is transmitted to lever 16 through the connecting means hereinabove described in connection with the drawings and is then transformed into intermittent movement by a suitable device for that purpose attached to the upper end of shaft 18, said intermittent moves ment being then transmitted to the cups3 and 4 as previously indicated. As shown in Figures 2 and 4, the cups 3 and 4 are supported in such amanner that their bite is positioned below the needle carrier 50 and entirely at one side of both of the shafts 18 and 30 and forwardly thereof with respect to the direction of movement of the fabric or other article upon which the overseaming operation is being performed. It is also clear from Figures 1 and 2 that the intermittent driving mechanism is positioned above the level of the needle carrier 50 and cups 3 and 4 so that the space thereby provided below said cups makes it possible for the unobstructed movement of articles of various types and sizes.

I claim as my invention: 1. An overseammg machine comprlslng a housing, a needle carrier, a bracket supported by saidhousing at one side of said needle carr1er,cooperat ing feed cups supported by said bracket in a position below said needle carrier, and feed cup actuating means supported by said bracket above said carrier.

'2. An overseaming machine comprising a housing, a needle carrier, a fixed-bracket supported by said housing at one side of said needle earrier,'a feed cup supported by said bracket in a position below the operating level of said needle carrier, feed cup actuating means supported by said bracket above the operating level of said needle carrier, a swinging head pivotally attached to said fixed bracket above the operating level of said needle carrier, a second feed cup mounted on said swinging-head in cooperating relation to the first mentioned feed cup, and means operated by said first mentioned feed cup actuating means for actuating said second feed cup.

3. An over-seaming machine comprising a housing a needle carrier, a fixed bracket supported by said housing at one side of said needle carrier, a feed cup supported by said bracket in a position below the operating level of said needle carrier, feed cup actuating means supported by said bracket above the oprating level of said needle carrier, a swinging bracket pivotally attached to said fixed bracket above the operating level of said needle carrier, a second feed cup mounted on said swinging bracket in cooperating relation to the first mentioned feed cup, means operated by said first mentioned feed cup actuating means for actuating said second feed cup, and adjustable means interposed between said fixed bracket and said swinging bracket for maintainin a predetermined interval between tlie eed cups carried by said respective brackets.

4. An overseaming machine comprising an inner feed cup, an outer feed cup, a driving shaft for said inner cup having means at its upper end fortranslating reciprocative movement into intermittent rotation, a pivotally suspended head for supporting said outer ed on said head, and anoperative connection between said inner cup driving shaft and said outer cup driving means.

5. An overseamlng machlne comprising an inner feed cup, an outer feed cup, a driving shaft for said inner cup having means at its upper end for translating reciprocative move ment into intermittent rotation, means at its lower end for driving said inner cup, a head for'supporting-said outer cup and pivotally mounted above said cups, a shaft journaled in said outer cup. supporting head, means at the upper end of said shaft for effective 001111861 tion with said driving shaft for the inner cup, and means at the lower end of said shaft for drivmg the outer cup.

' In testimony whereof, I have signed my name to this specification this 21st day of April, 1927.

MAX KoHLER. 

